text: import sqlite3
  import pandas as pd
  
  conn = sqlite3.connect("menu.db")
  c = conn.cursor()
  
  ###################################
  ## Key Words
  ###################################
  
  print(pd.read_sql_query("SELECT * FROM Sandwiches", conn))
  
  print("-------")
  c.execute('ALTER TABLE Sandwiches ADD in_stock int')
  print(pd.read_sql_query("SELECT * FROM Sandwiches", conn))
  
  print("-------")
  c.execute('ALTER TABLE Sandwiches DROP COLUMN in_stock')
  print(pd.read_sql_query("SELECT * FROM Sandwiches", conn))
  
  # Committing changes and closing the connection to the database file
  conn.commit()
  conn.close()
  